Stadium Grow with Horizontal light

I've sort of got a two level stadium w/ a 600w HPS horizontal bulb in the top level and a 400w MH vertical bulb on the lower level - I've got my "all natural" girls (growing straight upwards, no lst, etc) in a Vertical Donut around the MH while a couple LST girls sit under the horizontal HPS. I love the mix of spectrums; the HPS shines over the tops of the "all natural" girls while the MH hits the mid sections and the MH hits the mid-sections of the LST girls.

I__mh__I--hps---I >> look at this terrible diagram I made of my two-level grow!!

So ur horizontal 600 sits above(obviously) and to the side of ur donut?